This story is sweet and very touching. It got me thinking about some things. Anyway, if I could, I would nominate this for "most likely to be an episode" because as you write them the characters are completely themselves while still bringing forward a deeper insight into them.

I like your idea, especially since Melan obviously has issues trying to understand Marin and the human world. However, the entire time I was reading this, I couldn't help wondering why Melan didn't just go back into the ampoule to heal. In canon, he doesn't get hurt so badly that he can't go into the ampoule until Submaton Color.

For this story to make sense canon-wise, I would suggest either placing it in Submaton Color (if you wanted to keep the "Melan is injured" theme going), or finding another way for Melan to have this conversation with Granny. Maybe have Marin get the flu, or twist her ankle, and Melan would be worried about her, and that might open the door for him and Granny to talk.

Other than that, you've done a pretty decent job. You've got some serious potential, and I'd love to see what else you come up with. I'm also very glad that there are people writing for the Brigadoon fandom. Keep it up!

Ah, hai, hai, hai!
Brigadoon ficcies!
And I don't mean the musical!
I'm glade that some ppl have made Brigadoon fanficcies!(even if there are only two...)
Dang it... more Brigadoon1 Ah, yes, and at least slug-boy didn't get to comment, nor the other muses... they're on vacation
It's exam-week, and most of them are too stupid to go with me (Link), or are too big to fit in the skool(Wing-Zero), others control me 50%-99.9% of the time ("slug-boy/"Moochy"/Kerr 157), and the last is just plain scary (Majora)
NOTE: "Slug-boy" is my Animorphs muse, Majora(Zelda), and Wing-Zero(Oh, duh.)...and so is "Crazy Link", now that I think of it...
(again, Zelda)
But enoguh about muses! (I tend to ramble)
Fantastic fic! I'v eonly read the manga, but we fans still all feel the same way about Melan Blue... WE LOVE HIM! Right, fangirls?
... or maybe this series is still a bit too obscure for ther eto be enoguh known.
*sniff* Poor Melan...
But... it's on my favorites list to elt Brigadoon be known! Ahahah! (not the musical!)